Home / 21,190.38-31,782.33-5,609.22

Finding the Fourth Proportional to 21,190.38, 31,782.33 and 5,609.22

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Solution

The fourth proportional to 21,190.38, 31,782.33 and 5,609.22 is: 8,412.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.38 : 31,782.33 = 5,609.22 : x
  2. Step 2: Convert to fraction form
    21,190.38/31,782.33 = 5,609.22/x
  3. Step 3: Cross multiply
    21,190.38x = 31,782.33 × 5,609.22
  4. Step 4: Simplify right side
    21,190.38x = 178,274,081.08
  5. Step 5: Solve for x
    x = 178,274,081.08/21,190.38
  6. Step 6: Final answer
    x = 8,412.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.